Is it warm enough to swim in Harrison Lake in September? Average water temperature in Harrison Lake in September is 17.9°C and therefore is not suitable for comfortable swimming. The warmest water in Harrison Lake in September is 23°C, and the coldest is 12°C. To find out the water temperature today and in the coming days, go to Current water temperature in Harrison Lake
To get an accurate forecast for the water temperature in Harrison Lake for any chosen month, compare two years within a 10 year range using the chart below.
Day | 2025 | 2024 |
---|---|---|
1 September | 23°C | 20°C |
2 September | 23°C | 21°C |
3 September | 23°C | 22°C |
4 September | 23°C | 23°C |
5 September | 23°C | 23°C |
6 September | 22°C | 23°C |
7 September | 23°C | |
8 September | 22°C | |
9 September | 22°C | |
10 September | 21°C | |
11 September | 19°C | |
12 September | 17°C | |
13 September | 16°C | |
14 September | 16°C | |
15 September | 15°C |
Day | 2025 | 2024 |
---|---|---|
16 September | 15°C | |
17 September | 15°C | |
18 September | 15°C | |
19 September | 15°C | |
20 September | 15°C | |
21 September | 15°C | |
22 September | 15°C | |
23 September | 16°C | |
24 September | 15°C | |
25 September | 15°C | |
26 September | 15°C | |
27 September | 15°C | |
28 September | 14°C | |
29 September | 13°C | |
30 September | 12°C |
You can also view information about water temperature for other months by clicking on the month button below